uccessful in randomizing students between treatment and
control groups, we could not randomize instructors in either
group and thus could not control for differences in teacher
quality. Instructor surveys reveal that, on average, the instructors
in traditional-format sections were much more experienced
than their counterparts teaching hybrid-format sections
(median years of teaching experience was 20 and 5, respectively).
Moreover, almost all of the instructors in the hybridformat
sections were using the CMU online course for either
the first or second time, whereas many of the instructors in the
traditional-format sections had taught in this mode for years.
The “experience advantage,” therefore, is clearly in favor
of the teachers of the traditional-format sections. The questionnaires
also reveal that a number of the instructors in
hybrid-format sections began with negative perceptions of
online learning, which may have depressed the performance
of the hybrid sections. The hybrid-format sections were somewhat
smaller than the traditional-format sections, however,
which may have conferred some advantage on the students
randomly assigned to the hybrid format.
uccessful in randomizing students between treatment andcontrol groups, we could not randomize instructors in eithergroup and thus could not control for differences in teacherquality. Instructor surveys reveal that, on average, the instructorsin traditional-format sections were much more experiencedthan their counterparts teaching hybrid-format sections(median years of teaching experience was 20 and 5, respectively).Moreover, almost all of the instructors in the hybridformatsections were using the CMU online course for eitherthe first or second time, whereas many of the instructors in thetraditional-format sections had taught in this mode for years.The “experience advantage,” therefore, is clearly in favorof the teachers of the traditional-format sections. The questionnairesalso reveal that a number of the instructors inhybrid-format sections began with negative perceptions ofonline learning, which may have depressed the performanceof the hybrid sections. The hybrid-format sections were somewhatsmaller than the traditional-format sections, however,which may have conferred some advantage on the studentsrandomly assigned to the hybrid format.
การแปล กรุณารอสักครู่..